package edu.qd.learn.newchapter.chapter03.impl;

/**
 * @author 布衣
 */
public class StudentA implements Study{

    @Override
    public void goodGoodStudy() {
        System.out.println("A===");
    }

    public static void main(String[] args) {
        Study s = new StudentA();
        Study s1 = new StudentB();
        s.goodGoodStudy();
        s1.goodGoodStudy();
    }

}
